html,
body {
    height: 100%;
    width: 100%;
    #app {
        width: 100%;
        height: 100%;
    }
    a {
        text-decoration: none;
    }
    .btn_group {
      text-align: right;
      margin-bottom: 20px;
		}
    .el-select {
      display: block;
    }
}